Geared motor



July 5, 1932. I V, (5. APPLE GEARED MOTOR Filed March 1, 1930 2 Sheets5heec 1 V.G.APPLE GEARED MOTOR Fil ed March 1', 1930 2 Sheets-Sheet 2 July 5, 1932.

VIII/Il a:

Patented July 5, 1932 UNITED STATES PATENT OFFICE VINCENT G. APPLE,

or DAYTON, .0310

emnnn moron Application filed March 1,

enclose and segregate the gear mechanism and the necessary shaft bearings, all of which '1 require more or less oil to keep them lubricated, as to obviate the danger of getting 011 on the motor elements, particularly the com- ,mutator and brushes, to which oil is detrimental.

' Another object is to combine in the one structure appropriate switch mechanism for starting and stopping the motor. I Anotherobj ect is to simplify the insulatingof the switch mechanism, the brushes and the winding terminals, each from the other, by making the head upon which these several elements are supported entirely of insulating material.

' These and other objects are attained by the mechanism hereinafter described, reference being had to the drawings wherein- Fig. l is a side elevation of the motor.

Fig. 2 is another side elevation looking at Fi 1 in the direction of the arrow 2.

Iig. 3 is a top plan view of the motor.

Fig. 4 is a transverse section taken at 4-4 of Fig. 1. I

. Fig. ,5 is a vertical axial section taken at 55 of Fig. 2.

' Fig. 6 is a vertical axial section taken at 6-6 of Fig. 1.

Fig. 7 is a transverse section taken at 77 of Fig. 6.

Fig. 8 is a transverse section taken at 88 of Fig.5. a

, Similar numerals refer to similar parts throughout the several views. a i

- The housing 10, preferably die cast of metal, is divided into two main compartments, the upper or motor compartment 11 and the lower or gear compartment 12. The

motor compartment 11 is cup shaped, open at the top, and has two bosses 13 projecting inwardly from opposite walls.

' 50 Bosses 13 are tapped at 1 4 and two'studs 16 1980. Serial No. 432,543.

are screwed tightly into these tapped holes and extend upwardly therefrom. A laminated field core17 is seated in the compartment llfagainst shoulder 18 and is held thereagainst by clamps 19 and nuts 21. Coils 22 .5..

surround the poles 23' of the core and are heldthereon bysheet metal clamps 24. .The'lower or gear compartment contains all of the parts of the structure which require oil. The high speed armature shaft 25 ro- 1 tates onthe two ball bearings 26 and 27, the upper bearing 26 being seated directly in housing 10 while the other bearing 27 is seated in the knurled cap 28 which is screwed into the threaded opening 29. Opening 29 is of suflicient diameter to admit the upper bearing 26 at assembly. Athreaded plug 30 may be removedto fill the gear compartment 12 with oil. 1 "The low speed power shaft '31 is rotatably supported in a horizontalposition by the two bearings 32 and 33, (see Fig. 8). Bearing 32. is held directly in the hub 34 of housing 10 while bearing 33 is supported in the cap 35 threaded at 36 in the housing. The cap 35 5 is sufliciently large to admit the worm wheel 37 at assembly. Worm threads 38 cut (llr'ectly into the armature shaft 25 mesh with the teeth of worm wheel 37 An oil throw ring'39 above ball bearing 26 keeps oil from so cr eeping up the shaft and getting into the motor compartment 11, the bottom of which is lower in the center than around the outer partthus tending to return any oil to the gear compartment 12 which may by chance have gotten into the motorcompartment 11. Thearmature core 40 andthe commutator- 41 are mounted on the sleeve 42 and coils 43 are wound on the core and about the sleeve as shown. The completed armature fits over the upper smaller portion of shaft 25 and is secured to the shaft by the nut 44 and the washer 46. Washer 46 has one int'egral key 47 extending radially inward into a short keyway 48 in shaft 25 and another integral key 49 bent over to extend axially into a notch 51 in the end of the sleeve 42 whereby driving rotation is established between the shaft 25 and the sleeve 42. 10

The head 52 carries the brush gear and the motor switch and joins the housing 10 to form a closure about the moving parts, and, in order that the several electrical connections may be effectively insulated one from another, the entire head is made of molded insulation.

The head and the housing are rabbeted togetherat 53 and the studs-1'6 extend up, Wardly through the arcuate slots 54 whereby the head has limited rotative movement on the housing for brush adjustment." Nuts 56 secure the head to the housing when proper. brush adjustment has been made. A'hub' portion 57 surrounds andencloses thezcommutator at some distance therefrom, and a smaller-hub portion 58 fits the standard push button switch 59 more 1 closely. 'R'adially extendingbosses 60 contain thebrushes 61,-:the brush springs 62 and the brushi springzcapsi 68. -Metal insertsfi i convey current-from the brushes -to convenient terminal screws 66. Leads 67- emanating; from the one end'ofeach field coil are-connected tothese-screivsfthe other ends of the coils being connected by 'leads 68'to SCI\VS1,69 of switch 59, the hub 57 having outwardly bulging portions 71 through which the leads may pass.

A swivel eye 72 has astem 73 adapted-to turn' freely in the small hub 74 of head 52,

a-spun-over end'76 preventing thesstenifrom beingrremoved from the hub. Anopening 77; is provided so'that the motor maybe hung on-an y suitable hook= suspended, froma convenient support. I l

The threaded hub 7 Set cap35 is-adapted to' receive the casing-of a flexible =shaft,'-and-- the endof the powershaft 31- is flattened as at 79 to, provide a driving tangfor rotating. the flexible shaft. -A lug81 extending: laterallyirom the gear compartment 12 has a squared opening 82. A forked hook83 has: a squared shank- 84: which extends through; this op'eningz- A screw 86::holds' the forked hook secured in position. Hook '83 is provided-so that tools such as drillsyagrinding wheels, hair cutters and similar devices such as are customarily -f driven through flexible shafts m'aybe hung up When not'in use.

. Having described my invention, I-cl'ain1- Ina dynamo electric machine,- anqend enclosing head of molded-insulation having-a central hub, an electric SWltCh"'iI1-,'S3ld hub, a smallerhub at the end of the-firsthub, anda swivel in said smaller hub;

In testimony whereof Ilaflix my signature.

' VINOENT' G; APPLE; 

